Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/60r16 vs 215/55r17 Tire Comparison Side By Side
  205/60-16 215/55-17 Difference
Diameter inches (mm) 25.69 (652.4) 26.31 (668.3) 0.63 (15.9) 2.4%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 80.69 (2049.58) 82.66 (2099.53) 1.97 (49.95) 2.4%
Sidewall Height inches (mm) 4.84 (123) 4.66 (118.25) -0.19 (-4.75) -3.9%
Revolutions per mile (km) 785.21 (487.91) 766.53 (476.3) -18.68 (-11.61) -2.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.49 mph (32.97 km/h)
25 mph (40.23 km/h)25.61 mph (41.21 km/h)
30 mph (48.28 km/h)30.73 mph (49.46 km/h)
35 mph (56.33 km/h)35.85 mph (57.7 km/h)
40 mph (64.37 km/h)40.97 mph (65.94 km/h)
45 mph (72.42 km/h)46.1 mph (74.19 km/h)
50 mph (80.47 km/h)51.22 mph (82.43 km/h)
55 mph (88.51 km/h)56.34 mph (90.67 km/h)
60 mph (96.56 km/h)61.46 mph (98.91 km/h)
65 mph (104.61 km/h)66.58 mph (107.16 km/h)
70 mph (112.65 km/h)71.71 mph (115.4 km/h)
75 mph (120.7 km/h)76.83 mph (123.64 km/h)
80 mph (128.75 km/h)81.95 mph (131.89 km/h)
85 mph (136.79 km/h)87.07 mph (140.13 km/h)
90 mph (144.84 km/h)92.19 mph (148.37 km/h)
95 mph (152.89 km/h)97.32 mph (156.61 km/h)
100 mph (160.93 km/h)102.44 mph (164.86 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
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